Saw my nephew last weekend who is a premier green builder in Asheville, NC. In passing, he mentioned Big Ass Fans, and with a name like that, well- had to check 'em out.
These gi-normous fans are not only green- but cool looking and a great addition if you are planning a new large open space. Perfect for vaulted ceiling dwellings, lofts, warehouses and galleries. Not to mention most commercial spaces.
See/read about the fans here, and while your at it check out Jade Mountain Builders to see some of the most beautiful, sensibly priced green homes being built today built.